username = '13312345678'
password = '123456'
verifycode = '6666'

user_name = input("手机号: ")
pass_word = input("密码: ")
verify_code = input("验证码: ")

if user_name == username == 13312345678 and pass_word == password == 123456 and verify_code ==verifycode == 6666:
    print("登录成功")
elif user_name == username != 13312345678 and pass_word == password == 123456 and verify_code == verifycode != 6666:
    print("账号不存在")
elif user_name == username == 13312345678 and pass_word == password != 123456 and verify_code == verifycode == 6666:
    print("密码错误")
elif user_name == username == 12345678901 and pass_word == password == 123456 and verify_code == verifycode != 6666:
    print("验证码错误")
else:
    print("登录失败")

